[mass noun](Medicine)an antibiotic used in the treatment of infections caused by Gram-positive bacteria. It is similar in its effects to penicillin (医)红霉素
This is obtained from the streptomycete bacterium Streptomyces erythreus 这是从链霉菌——红色糖多孢菌中获取的
语源
1950s: from elements of the modern Latin taxonomic name (see above) + -in